aespipe reads from standard input and writes to standard output. It can be used to create and restore encrypted tar or cpio archives. It can be used to encrypt and decrypt loop-AES compatible encrypted disk images.
The AES cipher is used in CBC (cipher block chaining) mode. Data is encrypted and decrypted in 512 byte chains. [...]

It’s kind of ironic for an agency whose sole purpose is to spy on others would release a guide to secure one’s system. NSA last month released a list of guide to secure an operating system, but what we are interested most are the guides to Secure RHEL 5. The two guides are called:
1) Hardening [...]

Scanrand is a proof of concept, investigating stateless manipulation of the TCP Finite State Machine. It implements extremely fast and efficient port, host, and network trace scanning, and does so with two completely separate and disconnected processes — one that sends queries, the other that receives responses and reconstructs the original message from the returned [...]

Widely popular Open Source webserver scanner, Nikito, released a new version of this insanely handy tool for hackers, sysadmin, crackers, phreakers and whatnot. Nikto is not only a free webserver scanner but the one of the leading, even among commercial, scanners out there.
Here is a short description from Nikito site: http://www.cirt.net/code/nikto.shtml

Nikto is an Open Source [...]